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Coulomb Excitation of Proton-rich N = 80 Isotones at HIE-ISOLDE

Kern, Ralph ; Zidarova, Radostina ; Pietralla, Norbert ; Rainovski, Georgi ; Gaffney, Liam P. ; Blazhev, Andrey ; Boukhari, Amar ; Cederkäll, Joakim LU ; Cubiss, James G. and Djongolov, Martin , et al. (2020) 23rd International School on Nuclear Physics, Neutron Physics and Applications In Journal of Physics: Conference Series 1555(1).
Abstract

A projectile Coulomb-excitation experiment was performed at the radioactive ion beam facility HIE-ISOLDE at CERN. The radioactive 140Nd and 142Sm ions were post accelerated to the energy of 4.62 MeV/A and impinged on a 1.45 mg/cm2-thin 208Pb target. The γ rays depopulating the Coulomb-excited states were recorded by the HPGe-array MINIBALL. The scattered charged particles were detected by a double-sided silicon strip detector in forward direction. Experimental γ-ray intensities were used for the determination of electromagnetic transition matrix elements. Preliminary results for the reduced transition strength of the B(M1 23+ to 21+)=0.35(19)... (More)

A projectile Coulomb-excitation experiment was performed at the radioactive ion beam facility HIE-ISOLDE at CERN. The radioactive 140Nd and 142Sm ions were post accelerated to the energy of 4.62 MeV/A and impinged on a 1.45 mg/cm2-thin 208Pb target. The γ rays depopulating the Coulomb-excited states were recorded by the HPGe-array MINIBALL. The scattered charged particles were detected by a double-sided silicon strip detector in forward direction. Experimental γ-ray intensities were used for the determination of electromagnetic transition matrix elements. Preliminary results for the reduced transition strength of the B(M1 23+ to 21+)=0.35(19) μN2 of 140Nd and a first estimation for 142Sm have been deduced using the Coulomb-excitation calculation software GOSIA. The 23+ states of 140Nd and 142Sm show indications of being the main fragment of the proton-neutron mixed-symmetry 21, ms+ state.

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publication status
published
subject
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Journal of Physics: Conference Series
volume
1555
issue
1
article number
012027
publisher
IOP Publishing
conference name
23rd International School on Nuclear Physics, Neutron Physics and Applications
conference location
Varna, Bulgaria
conference dates
2019-09-22 - 2019-09-28
external identifiers
  • scopus:85086428047
ISSN
1742-6588
DOI
10.1088/1742-6596/1555/1/012027
language
English
LU publication?
yes
id
e6a10e1d-2a75-49be-8786-93219eeef158
date added to LUP
2020-06-30 16:09:56
date last changed
2020-07-01 05:34:47
@article{e6a10e1d-2a75-49be-8786-93219eeef158,
  abstract     = {<p>A projectile Coulomb-excitation experiment was performed at the radioactive ion beam facility HIE-ISOLDE at CERN. The radioactive <sup>140</sup>Nd and <sup>142</sup>Sm ions were post accelerated to the energy of 4.62 MeV/A and impinged on a 1.45 mg/cm<sup>2</sup>-thin <sup>208</sup>Pb target. The γ rays depopulating the Coulomb-excited states were recorded by the HPGe-array MINIBALL. The scattered charged particles were detected by a double-sided silicon strip detector in forward direction. Experimental γ-ray intensities were used for the determination of electromagnetic transition matrix elements. Preliminary results for the reduced transition strength of the B(M1 2<sub>3</sub><sup>+</sup> to 2<sub>1</sub><sup>+</sup>)=0.35(19) μ<sub>N</sub><sup>2</sup> of <sup>140</sup>Nd and a first estimation for <sup>142</sup>Sm have been deduced using the Coulomb-excitation calculation software GOSIA. The 2<sub>3</sub><sup>+</sup> states of <sup>140</sup>Nd and <sup>142</sup>Sm show indications of being the main fragment of the proton-neutron mixed-symmetry 2<sub>1</sub>, ms<sup>+</sup> state.</p>},
  author       = {Kern, Ralph and Zidarova, Radostina and Pietralla, Norbert and Rainovski, Georgi and Gaffney, Liam P. and Blazhev, Andrey and Boukhari, Amar and Cederkäll, Joakim and Cubiss, James G. and Djongolov, Martin and Fransen, Christoph and Gladnishki, Kalin and Giannopoulos, Efstathios and Hess, Herbert and Jolie, Jan and Karayonchev, Vasil and Kaya, Levent and Keatings, James M. and Kocheva, Diana and Kröll, Thorsten and Möller, Oliver and O'Neill, George G. and Pakarinen, Janne and Reiter, Peter and Rosiak, Dawid and Scheck, Marcus and Snall, Jacob and Söderström, Pär Anders and Spagnoletti, Pietro and Stegmann, Robert and Stoyanova, Milena and Thiel, Stefan and Vogt, Andreas and Warr, Nigel and Welker, Andree and Werner, Volker and Wiederhold, Johannes and Witte, Hilde De},
  issn         = {1742-6588},
  language     = {eng},
  month        = {05},
  number       = {1},
  publisher    = {IOP Publishing},
  series       = {Journal of Physics: Conference Series},
  title        = {Coulomb Excitation of Proton-rich N = 80 Isotones at HIE-ISOLDE},
  url          = {http://dx.doi.org/10.1088/1742-6596/1555/1/012027},
  doi          = {10.1088/1742-6596/1555/1/012027},
  volume       = {1555},
  year         = {2020},
}